VideoBackends: Disable GPU Texture Decoding under MoltenVK #8743
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Here are some logs of the GPU Texture Decoding + MoltenVK crash, for anyone interested.
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The artifacts have been fixed in MoltenVK since 1.0.35 (including the version currently shipping with Dolphin). The crash is actually a regression from #7753. See also: |
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Well okay, but that is such a large PR there's absolutely no way to narrow down a cause without some good old fashioned debugging, of which I lack the knowledge to do in this area. Until someone with the necessary knowledge has the motivation to actually debug it, at least quelling the support threads on the forum seems reasonable. |
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Do you have a Fifolog of that particular scene? |
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@Techjar: Which macOS version do you use and which Mac / GPU ? I tried with the latest Dolphin on a Mac mini 2012 with IGP Intel HD 4000 and a Macbook Air 2013 with Intel HD 5000 and it crashes immediately when enabling GPU Texture Decoding...I don't even get this screen with artifacts, as reported here: https://bugs.dolphin-emu.org/issues/11819 |
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@gilcel: The screenshot was most likely captured prior to #7753. Meanwhile MoltenVK fixed the glitch in v1.0.35 (Vulkan SDK 1.1.108.0). You can still observe it in Wind Waker, because it manages to display the Nintendo and Dolby ProLogic logo before crashing. Mind that #8110 updated MoltenVK to a glitch-free version. |
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Yeah I was informed that MoltenVK no longer causes those artifacts, it just crashes. |
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@Techjar: I was just mentioning this, because you listed the glitches as one of the reasons for opening this PR. |
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The current MoltenVK release 1.0.42 (for Vulkan SDK 1.2.141) fixes the crash. However there seems to be an issue anyway, because you have to start a game twice in order for it to actually display correct textures.
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Still crashing for me in latest master, though it gets further than before. Either way, crashing or at best hella glitching is means we should just disable gpu texture decoding in moltenvk. At least in the UI. |
It's broken and causes spectacular artifacts and crashes.
Techjar
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How does this Pull Request affect the GUI? Is the checkbox just grayed out? |
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Yes, the checkbox is grayed out when using Vulkan on macOS. |
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This PR does not gray out the checkbox on my 13" 2020 MBP. Does it still need work or was it rolled back due to issues and not mentioned?
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It's broken and causes spectacular artifacts and crashes. Here's an example of what those look like:
I don't know if the problem has been fixed upstream in MoltenVK. If someone else wants to look into that, by all means, I lack the in-depth knowledge of the video backends to do that myself. In the meantime this seems like a reasonable solution to most of the reports of crashes when using Vulkan on MacOS, due to users not being aware the feature is broken.